docker-compose exec -T mysql sh -c 'mysql -uroot -p"$MYSQL_ROOT_PASSWORD"' <<'SQL'
CREATE USER IF NOT EXISTS 'app_rw'@'%' IDENTIFIED BY 'StrongP@ss_rw_123';
GRANT SELECT, INSERT, UPDATE, DELETE ON smart_parking.* TO 'app_rw'@'%';
FLUSH PRIVILEGES;
SQL